Metal burner and welder.



P. LYNCH.

METAL BURNER AND WELDER.

APRLLCATION FILED MAR. 10. 1916.

Patented Sept. 26, 1916.

PHILIP LYNCH, OF ROCK ISLAND, ILLINOIS.

METAL BURNER AND WELDEB.

I To all whom it may "concern Be it. known that I, PHILIP LYNCH, of Rock Island, in the county of Rock Island and State of Illinois, have invented certain new and useful Improvements in Metal Burners and Welders; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

-My invention relates to electric welding apparatus and is particularly designed for use with an ordinary alternating electric current, such as is commonly used for lighting purposes, the device being capable of ready attachment to an ordinary incandescent lamp socket by means of a cord and plug, and the purpose of the invention is to provide a simple, efficient, economical and easily operated device for fusing and welding metals, as for instance, sealing the contacts of storage or secondary electric batteries, melting two pieces of metal of the same kind or different kinds at their common areas, or contact points, so as to cause them to coalesce and unite, mending cracks or breaks in metallic objects, filling blow-holes in castings, burning ofi pro ections and roughnesses on metallic objects, etc.

In the drawing Figure 1 is a perspective view of an electrical appliance embodying my invention. Fig. 2 is a detail ofthe transformer.

The apparatus as a whole comprises a transformer, and two working terminals connected thereto. The alternating electric current transformer 1 is especially designed and wound for this purpose. It is similar in form and construction to an ordinary transformer, and has a laminated magnetic iron core with. a primary and .a secondary coil of insulated copper wire. The size of the core, the relative amount of wire in the primary coil 2, and the secondary coil 3, and thesize or cross section ofthe wire in each coil must be determined by the specific use. for which each transformer is intended, that is the particular metal or metals to be worked, andthe quantities or sizes of pieces of such metals to be handled.

The winding of the coils of this transformer differs in one very essential respect or particul'ar from the Windin of the known transformers in the following respect :The secondary coil 3 consists of two insulated copper wires 4, 5, of widely different cross Specification of Letters Patent. Patented Sept, 26, 1 91(;

Application filed March 10, 1916. Serial No. 83,428.

'these two wires being wound onto the coil together, that is side by side and thus runnmg parallel to each other throughout their entire length. This arrangement produces a very complex inductive action in the coil, and renders the resulting current peculiarly effective for the purpose for which the inventlon is intended. The waves of the alternating current do not pass with the equal readiness or velocity through the fine wires that they do through the heavy wire and the waves in the two branches of the coil are therefore thrown out of step with each other. The inductive action between the two branches of the coil further tends to distort. the waves in both branches so as to make the inducted current in the secondary coil differ very materially from what it would have been, had there been only one wire in the primary coil. This produces a high efficiency which is not attainable with known burners and welders by means of ordinary alternating currents.

Provision is made, as at 6, for connecting the terminals of primary coil 2 by means of a lamp cord and plug to an ordinary incandescent lamp socket. The wires of the secondary coil terminate in. two binding posts 7, 8, to which the other general parts of the appliance are attached. These consist of working terminals 9, 10. The terminal 9 consists of brass rod, provided with an insulated handle, one end of the rod being connected by means of a flexible copper wire 12 to binding post 7, of the secondary coil of the transformer, and the other end shaped into a sharp point and bent at 'a convenient angle as at 13 for the purpose of penetrating incrustations and coatings on metals, so as to establish a clean electrical contact with the metal to which the current is to be applied. This, terminal is also provided with consists of a brass rod 15provided with an insulated handle, one end. of the rod being connected by means of a flexible copper wire 16 to the binding post 8 of the second.- ary coil of the transformer. The other end of the working terminal is provided with a clamp '17 for holding a carbon pencil 18,

the metal, and partly through irect con tact with the incandescent point of the carbon pencil. After the metalis melted-this terminal enables the operator to work 'the molten metal into the desired shape and' position with the carbon pencil very much in the same mannerm which a tlnner would use an ordinary soldering iron.

I claim as my invention: 1. A portable electric welding appliance comprising, in combination, an alternating current transformer, awork engaging member having an angularly, disposed contactpoint, said member being flexibly connected to said transformer and forming above the angular end thereofa support for a bar of the metal to be fused, a second contact member flexibly connected to said transformer, a clamp at one end of said second contact member, and a carbon pencil held by said clamp.

2. In combination with an electric welding appliance comprising a plurality of work-engagin 4 terminals, an alternating current trans ormer having a primary c011 and a secondary coil, said secondary coil,

consisting of two insulated copper wires of different cross sectional area, wound side by side and in parallelism to each other throughout their length.

3. In a portable electric welding appliance, in combination with an alternating current transformer, a working terminal consisting of a brass rod having an insulated handle, one end of said rod being bent at an angle and formed into a sharp work engaging point, said terminal forming a support for a .bar of the metal which it is intended to fuse, and a second working terminal consisting of a brass rod having an insulated handle at one end, a clamp at its other 'end, and a carbon pencil held by said clamp.

- In testimony whereof, I have signed this specification'in the presence of two subscribing witnesses.

PHILIP LYNCH. Witnesses:

ELVAVR. ALLSBROW, N. M. Dames. 

